This whole article is to help you get as much out of your marketing budget as possible. We've established that play bots are a waste of cash and then promotion is the way to go.
Real promotion services usually give a range of plays that will be delivered because the success of the promotion depends on the quality of the song.
Here's an example:
If you pay $50 to get a song promoted and receive 7,000 plays, 100 likes, and 20 new followers, and another artist pays the same amount and gets 15,000 plays, 500 likes, and 100 new followers, it means people liked the 2nd song better.
That's the way real promotion works!
It's not rocket science, but I still see artists wasting precious time and money by not investing wisely in themselves.
Many will take all the time and money in the world to invest in gear (which is important), but don't forget that without an audience, you have no career.